Just Passing Time Is All,.
You're just letting some space grow between you guys before talking to them again. Just because you don't talk to them now, doesn't mean that you'll talk to them later. For all you know, they might be someone that you really need in the future; someone who you might need to talk to. Usually, I like the other person making the move and having THEM talk to me first but if I don't want to talk to delete me because I was waiting for them. *sigh* And plus, if you delete someone just because of that, how do you think it'll make the deletee feel?